Weft-detecting mechanism



PatentedMar. 10, 1925.

UNITED S'IATIEISA PATENT lorries.

EIPPA H. RYON, OF WALTHM, MASSACHUSETTS, ASSIGNOR T0 CBOMPTON A@L KNOWLES LOOM WORKS, OF VJOBCESTEB, MASSACHUSETTS, A vC()RP()RALION OF MASSACHUSETTS.

WEET-DETECTING MECHANISM.

Application l'edMarch 22, 1923. vSerial No. 626,825.

To all whom t may concern:

B@ it knoivn that I, Erm H. RYON, a citizen ot the United States, residing at Waltham, in the Vcounty of Middlesex and State of Massachusetts, have invented a new and useful left-Detecting Mechanism, ot' which the following is a specification.

This invention relates to al detecting mechanism for a wett replenishing loom and is designed to indicate substantial or complete exhaustion of Wett on the active weft carrier in a. reliable and effective manner.

1t is an important object ot my invention to provide a` weft replenishing mechanism so designed that the portion of the loom stopping or indicating; mechanism which is engaged by the weft detectingI member may have an opera-tive movementin a direction substantially at right angles to the movement of said ldetect-ing member While maintaining," operative relations therewith in all positions thereo't. 'A further object of my invention is to provide a convenient means by which the eiifective length of the Weitdetecting member may be conveniently adjusted and maintained.

To the` attainment of these objects in their preferred embodiment, I provide a tivo-piece detecting' member movable in a substantially horizontal direction and an arm or latch continuously positioned thereby hut movable by an actuating device in a substantially vertical direction.

My invention lurther relates to arrangements and combinations of parts Which vvill he hereinafter described and more particularly pointed out in the appended claims.

A. preferred form ot' my invention is shown in the drawings, in which Fie'. 1 is a4 side eleva-tion oi' my improved detectingV mechanism;

Fig. 2 is a plan view thereof;

Fig. 3 is a sectional side elevation taken along' the line 3 3 in Fig. 2;

Fig. 4 is a partial sectional rear elevation, taken along the line 11-4 in Fig. 1, and

Fig. 5 is a. detail sectional elevation, taken along the line 5-5 in Fig. 3.

Referring to the drawings, I have shown a portion of a loom side 1() on which is mounted a stand or bracket 1l supporting a pivot 12 ttor an arm 13. The arm 13 is connected by a link 14 with an arm 15 on a shaft 16 extending across the front of the loom and connected to suitable and usual mechanism ttor stopping' the loom or for indicatingI a. wett carrier transfer as may be desired. 4

A lever 17 is mounted on' a stud 1S eX- tending from the side ofl the arm 13 at a point intermediate its ends and a Weight 19 on the lever 17 normally maintains thel lever in the position shown in itull lines in Figs..

1 and 3. An actuator l0 is' mounted tor vertical reciproeation in a bearing: 21 by driving mechanismnot shown, and is provided with a notch or recess 2Q adapted to receive the pointed lower end of an arm Q?, integral with the lever 17 and Weight 19. By such engagement the lever is" forced upward and moves the shaft 16 angnlarly through the arm 13, the link 14 and the arm The norn'ial'position ot theJ arm 13' is determined by a stop sere-iv 24 adjustably threaded in a. portionot the bracket 11.

The weft detecting' member 2G is preterably formed with a cylindrical body slidable in a` horizontal passage 9,7 inthe stand 11. rlhe Wett engaging portion of said member is ot substantially )rectangular cross section, as indicated in Fie". 5, and this part o the detector is held 'trom angular movement by astop plate QS having; a screw and slot adjustment on the stand 11 and having' a non-circular opening* through which the rectangular part et the detector is slidable.

A head 80 is threaded to the detectingl member and has a iiattened portion litting- Within a longitudinal groove 31 in the lever 17. The length of 'the detecting member may be readily adjusted by manually moving the lever to the dotted line position in Fig. El, and thereafter turningA the head 30 on the thread of the detectingmember, thus shortening' or lengthening the member as desired.

Then the lever 17 is released. the flattened end of the head Will be received in the groove 31 and' will be held from angular movement thereby.

The normal position ot the parts is shown in Fig. 1 with the lever 17 in the path et the actuator 20. 1f the detecting member engages a sullricient supply of weft on the active Wett carrier, it Will be kpushed torward by the lay, swinging the lever 17 out of the path of the actuator as the lay beats up. When, however, the weft becomes substantially or entirely exhausted, the detector will permit the lever to remain in its normal position, with the arm 23 in the path of the actuator, whereupon the arm and lever will be pushed upward thereby and will operate through the arm 13 to rock the shaft 16 and stop the loom or replenish the we'lt sup Plylt will be noted, that in every vertical position of the lever 17, the head 3() of the detecting member 26 remains in the groove 31 and the operative relation of the parts is thus maintained. The detecting member shown in the drawings is particularly adapted for use with a bobbin having a slot into which the detector enters when the weft is exhausted, but it will be understood that my invention is not limited to use with this type of bobbin nor with this particular detecting member except as set it'orth in the claims.

That I claim is:-

1. A detecting mechanism for a. weft replenishing loom comprising a detecting member movable forward with the lay when engaged by a weft carrier having a sutilcient supply of weft thereon, an actuator movable transversely to the path of movement of said detecting member, an arm mounted on a fixed pivot, a lever pivoted on said arm and normally depending adjacent said detecting member, and connections through which said arm and lever are moved transversely t0 said detecting member by said actuator upon weft exhaustion, said detecting member and said lever having portions cooperating with each other in every transverse relation thereof.

2. In a weft replenishing loom, a swing.- ing lever having a longitudinal groove therein, means to move said lever lengthwise of said groove, and a weft detecting member having a non-circular end litting said groove and engaging said lever in every operative position thereof.

3. In a weft replenishing loom, a twopiece weft detecting' member, one portion thereof being slidably but non-rotatably mounted and engaging the weft on the activel weft carrier, and the second portion thereof being slidably and rotatably mounted and having a threaded connection to said lirst portion, said second portion having a noncircular end, and a grooved lever pivoted above said detecting member and receiving the non-circular end thereof in said groove, whereby relative rot-ation of the parts of said detecting member is prevented.

4. ln a loom, a stand, a weft detecting member, and a. device engaged thereby, said member being formed in two parts having a threaded connection by which the length of said member may be adjusted, one of said parts being held from angular movement by said stand and the other part being held from angular movement by engagement with said device, and means to move said device transverse-ly relatively to said member while preserving the operative relation between said member and device.

In testimony whereof l have hereunto afHXed my signature. Y

Y EPPA H. RYON. 

